#test1 {
  width: 100px;
  height: 100px;
  background-image: url('img/angular.jpg');
  background-repeat: no-repeat;
  background-size: 100% 100%;
}
#test2 {
  width: 200px;
  height: 200px;
  background-image: url('img/react.png');
  background-repeat: no-repeat;
  background-size: 100% 100%;
}
#test3 {
  width: 300px;
  height: 300px;
  background-image: url('img/vue.jpeg');
  background-repeat: no-repeat;
  background-size: 100% 100%;
}
